EP1344970B1 - Elément d'étanchéité annulaire - Google Patents

Elément d'étanchéité annulaire Download PDF

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Publication number
EP1344970B1
EP1344970B1 EP03005299A EP03005299A EP1344970B1 EP 1344970 B1 EP1344970 B1 EP 1344970B1 EP 03005299 A EP03005299 A EP 03005299A EP 03005299 A EP03005299 A EP 03005299A EP 1344970 B1 EP1344970 B1 EP 1344970B1
Authority
EP
European Patent Office
Prior art keywords
sealing
ring
elements
annular sealing
annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03005299A
Other languages
German (de)
English (en)
Other versions
EP1344970A1 (fr
Inventor
Norbert Funke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Funke Kunststoffe GmbH
Original Assignee
Funke Kunststoffe GmbH
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Filing date
Publication date
Application filed by Funke Kunststoffe GmbH filed Critical Funke Kunststoffe GmbH
Publication of EP1344970A1 publication Critical patent/EP1344970A1/fr
Application granted granted Critical
Publication of EP1344970B1 publication Critical patent/EP1344970B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection

Definitions

  • the invention relates to an annular sealing element with the features of the preamble of claim 1.
  • a generic annular sealing element is known from US-PS 4,368,894. However, it is intended for insertion into a sealing chamber on a tube, which has a circular segment-shaped cross-section. For this reason, a plurality of finger-shaped ribs are provided, which extend in the same length radially outwardly from the center of the curvature of the sealing chamber with the same length.
  • the pipe sealing element has to be prestressed via a steel ring, which makes the production more expensive and makes manual assembly more difficult. A tolerance compensation in the radial direction is not possible due to the steel ring. Although the radial orientation of the ribs allows axial support at the moment of insertion of the spigot end in a pipe joint.
  • a pipe connector for plastic pipes is known.
  • the plastic pipes have a spigot with a smooth extrusion surface and a sleeve.
  • a receiving groove for a loosely inserted sealing ring is arranged in the sleeve.
  • the sealing ring consists of one piece in the trapezoidal cross-section of the receiving groove with contact surfaces fitted retaining ring portion and two in contrast funnel-shaped retracted sealing lip sections.
  • the sealing lip sections additionally carry sealing ribs.
  • the disadvantage is that the sealing ring is complicated and expensive.
  • the support section must always be inserted into the receiving groove, that the insertion first impinges on the fitted retaining ring portion and only then on the two sealing lip sections, because only so the sealing ring can develop its sealing properties. If the sealing ring with the two sealing lip sections is inserted to the front, a leaky pipe connection is created.
  • a pipe connection for pipes which consists of a plastic pipe which is surrounded by a concrete pipe.
  • a sealing chamber is arranged, in which an annular seal is inserted, over which the exposed plastic tube of the spigot end is pushed.
  • a second ring seal is located between the pointed end and the socket end of the concrete pipes. The ring seals are in the unpressed state in cross-section substantially round and fill in the pressed state, the seal chamber at least partially.
  • the disadvantage is that the ring seal is simple, but can roll out of the seal chamber when inserting the spigot end. To avoid this, lip seals are used, which can be used only in the insertion direction of the spigot end in the seal chamber.
  • a ring seal is positioned, which must be anchored against lateral displacement.
  • annular sealing element having the features of claim 1.
  • the ring sealing element is constructed so that it can be safely inserted into the sealing chamber without specialist knowledge.
  • the ring sealing element is easy to use, but very comfortable for the liquid sealing.
  • the different vaults in the sealing ring inner side element ensure that the ring body develops a targeted and gradual contact force when inserting the spigot end. This is supported by the elasticity of the annular body.
  • the circular segment-shaped outer side curvature ensures proper contact of the ring seal. In the compressed state, the outer side curvature is pressed even larger area to the spigot and thus causes a large-scale seal with a stepped sealing force. Due to the fact that the two outer leg ring elements in the undeformed state of the ring body continue to protrude from the sealing ring inner side element than the two inner leg ring elements, a coordinated support of both foot ring elements is secured.
  • the side wall elements can be arranged at least partially wedge-shaped relative to each other.
  • the annular body is substantially adapted to the shape of the sealing chamber and causes a very good support in the sealing chamber.
  • At least one partially continuous support shoulder body may be formed on at least one of the side wall elements. But it can also be formed on both side wall elements each have a support shoulder body. In both cases it is ensured that width tolerances of the sealing chambers are compensated. The ring body is so firmly pressed in each case held in the seal chamber.
  • the ring body with its two outer and inner leg ring elements and the two support shoulder bodies may be formed from an elastomer.
  • the elastomer can be a rubber or to be a soft plastic. He can have a Shore hardness A between 30 and 50. The hardness is preferably 50 Shore-A.
  • the ring sealing element according to the invention is preferably used in a device for a connection of two tubular bodies, which are each provided with a sleeve and a spigot, wherein at least in the socket end at least one sealing chamber is arranged with a rectangular cross-section.
  • the ring seal member may be disposed with both the first and second sidewall members toward the tip end insertion direction.
  • the sealing chamber is arranged in the socket end. But it can also be arranged in the spigot. It is also possible that it can be arranged both in the socket end and in the spigot end.
  • sealing chamber in the described ends two sealing chambers can be arranged. Where and how many sealing chambers are provided depends on the respective conditions of use.
  • a pipe connection between two plastic pipes 1, 3 is shown.
  • Each plastic tube terminates at one end in a socket end 2 and at the opposite end in a spigot end 4.
  • a sealing chamber 5 is formed in the socket end 2.
  • an annular seal member 6 is used, which is shown in a scale 1: 1 in Fig. 4.
  • the sealing ring outer side element 8 is designed as a circular segment-shaped outer side curvature 10.
  • the zenith of the outer curvature 10 lies exactly in the middle of the sealing ring outer side member. 8
  • the seal ring inner side member 7 has an inner side main convex 11 which is bounded on both sides by an inner side minor camber 12.1 and 12.2.
  • the two substantially wedge-shaped side wall elements 15, 16 each end in an outer foot ring element 13.1 and 13.2.
  • an inner leg ring element 14.1 By an inner leg ring element 14.1, the inner side auxiliary curvature 12.1 opposite the inner side main bulge 11 and by an inner leg ring element 14.2, the inner side auxiliary curvature 12.2 relative to the inner side main curvature 11 delimited.
  • the support shoulder body may be formed continuously and / or in sections. It may be present on one or both side wall elements.
  • the ring seal member 6 is, as shown in FIG. 3, inserted into the seal chamber 5.
  • the inclination of the side wall elements 15, 16 substantially corresponds to the inclination of the side wall elements of the sealing chamber 5.
  • the two inner leg ring elements are above the bottom of the seal chamber 5.
  • the two mutually opposite support shoulder body press on the side walls of the seal chamber. As a result, dimensional tolerances are compensated, which can arise during the molding of the seal chambers.
  • the annular body 9 is pressed correspondingly far into the sealing chamber 5.
  • a different push-in into the sealing chamber 5 takes place.
  • the inner-leg ring elements 14. 1 and 14. 2 also touch the bottom of the sealing chamber 5.
  • the outer side curvature 10 is flatter than in the unpressed state.
  • Essential to the invention is that these sealing properties of each inserted ring sealing element 6 are developed.
  • the mounting direction of the ring sealing element 6 is indifferent.
  • the individual ring sealing elements can be inserted at any point in the sealing chamber of the socket end.
  • the pipelayer, who inserts the ring sealing elements in the individual sealing chambers, need not worry about the later insertion direction of the spigot end. Semi-skilled assistants can thus be used for inserting the ring sealing elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)
  • Sealing Devices (AREA)
  • Gasket Seals (AREA)

Claims (11)

  1. Garniture d'étanchéité annulaire (6) pour l'assemblage de deux corps de tubes (1, 3) dont l'un au moins comporte au minimum une chambre d'étanchéité (5) de section transversale rectangulaire ou trapézoïdale :
    - dans laquelle la garniture d'étanchéité annulaire (6) comprend un corps annulaire (9) au moins partiellement élastique qui est délimité par un élément de face extérieure (8), par un élément de face intérieure (7) qui lui est opposé et par deux éléments latéraux de paroi (15, 16) reliant l'élément de face extérieure (8) et l'élément de face intérieure (7),
    - dans laquelle l'élément de face extérieure (8) est configuré suivant une courbure (10) en forme de portion de cercle orientée en direction d'un axe central,
    - et dans laquelle l'élément de face intérieure (7) est orienté en direction opposée à l'axe central et présente en son centre une courbure principale (11) en forme de portion de cercle que jouxtent, de chaque côté, des courbures secondaires (12.1, 12.2), délimitées par une patte extérieure (13.1, 13.2) et par une patte intérieure (14.1, 14.2),

    caractérisée en ce que les pattes extérieures et intérieures (13.1, 13.2, 14.1, 14.2) - vues en coupe transversale et en situation de non déformation du corps annulaire. (9) - sont alignées sur des lignes parallèles à l'axe central et en ce que les deux pattes extérieures (13.1, 13.2) dépassent de l'élément de face intérieure (7) de la garniture annulaire (6) sur une plus grande longueur que les deux pattes intérieures (14.1, 14.2).
  2. Garniture d'étanchéité annulaire selon la revendication 1, caractérisée en ce que les éléments latéraux de paroi (15, 16) sont disposés, au moins pour partie, en oblique l'un par rapport à l'autre.
  3. Garniture d'étanchéité annulaire selon la revendication 1 ou 2, caractérisée en ce que dans le prolongement d'au moins un des éléments latéraux de paroi (15, 16) et attenant à celui-ci est agencé un corps d'appui (17, 18) qui, au moins pour partie, est configuré d'un seul tenant.
  4. Garniture d'étanchéité annulaire selon la revendication 1 ou 2, caractérisée en ce que dans le prolongement des deux éléments latéraux de paroi (15, 16) et attenant à ces derniers est agencé un corps d'appui (17, 18).
  5. Garniture d'étanchéité annulaire selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps annulaire (9) comprenant les deux pattes extérieures (13.1 , 13.2), les deux pattes intérieures, (14.1, 14.2) et les deux corps d'appui (17, 18) est formé dans un élastomère.
  6. Garniture d'étanchéité annulaire selon la revendication 5, caractérisée en ce que l'élastomère est un caoutchouc ou une matière plastique souple d'une dureté comprise entre 30 et 80 Shore-A.
  7. Dispositif d'assemblage de deux corps de tubes (1, 3) dont chacun comprend un embout femelle (2) et un embout mâle (4), dans lequel au moins l'embout femelle (2) comporte au minimum une chambre d'étanchéité (5) de section transversale rectangulaire dans laquelle est placée une garniture d'étanchéité (6) selon au moins l'une des revendications 1 à 6.
  8. Dispositif selon la revendication 7, caractérisé en ce que la garniture d'étanchéité (6) peut être disposée aussi bien avec le premier qu'avec le deuxième élément latéral de paroi (15, 16) orienté dans le sens d'introduction de l'embout mâle (4).
  9. Dispositif selon au moins l'une des revendications 7 ou 8, caractérisé en ce que deux chambres d'étanchéité (5) sont agencées dans l'embout femelle (2) et/ou dans l'embout mâle (4).
  10. Dispositif selon au moins l'une des revendications 7 à 9, caractérisé en ce que les corps de tubes (1, 3) sont constitués d'un tube intérieur en matière plastique entouré d'un tube extérieur.
  11. Dispositif selon la revendication 10, caractérisé en ce que le tube extérieur est en béton.
EP03005299A 2002-03-16 2003-03-11 Elément d'étanchéité annulaire Expired - Lifetime EP1344970B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20204239U 2002-03-16
DE20204239U DE20204239U1 (de) 2002-03-16 2002-03-16 Universal-Rohrdichtung

Publications (2)

Publication Number Publication Date
EP1344970A1 EP1344970A1 (fr) 2003-09-17
EP1344970B1 true EP1344970B1 (fr) 2006-02-15

Family

ID=7969051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005299A Expired - Lifetime EP1344970B1 (fr) 2002-03-16 2003-03-11 Elément d'étanchéité annulaire

Country Status (3)

Country Link
EP (1) EP1344970B1 (fr)
AT (1) ATE317958T1 (fr)
DE (2) DE20204239U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20212414U1 (de) * 2002-08-13 2003-09-25 Ckw Ges Fuer Kunststoffverarbe Verbindungsstück für Kunststoffrohre

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1247773B (de) * 1962-03-28 1967-08-17 Johns Manville Verbindung fuer teleskopisch ineinandergeschobene rohrfoermige Teile, insbesondere Muffenrohrverbindung, beispielsweise von Asbestzement-Rohren, mit einem elastischen Dichtungsring
DE1750390B2 (de) * 1969-04-26 1973-02-08 Dichtung zum einsetzen in eine kupplungsmuffe fuer rohre
NO801521L (no) * 1980-05-22 1981-11-23 Rieber & Son As Armert tetningsring.
GB2218166B (en) * 1988-04-20 1992-03-18 Victaulic Plc Jacking pipe seals
DE10033096A1 (de) * 2000-07-07 2002-02-14 Mol Gummiverarbeitung Dichtungsring für eine Steckmuffenrohrverbindung

Also Published As

Publication number Publication date
ATE317958T1 (de) 2006-03-15
DE20204239U1 (de) 2002-05-29
EP1344970A1 (fr) 2003-09-17
DE50302391D1 (de) 2006-05-04

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